Sometimes wonder what is the true reasoning for restricting bat size. The factors people have been talking about can easily be contradicted.
For instance, there are more test matches ending in results which means bowlers are taking 20 wickets, 400+ score was chased down more than 10 years ago when the bats were smaller. Why not accept the fact that batsmen of current age are lot more creative, hard working and successful than yesteryear's.
I think its a conspiracy by retired cricketers because they see batsmen of this generation scoring lot more and easily than them.
Guys like Kohli, ABD, Amla, Smith etc use normal size bats (compared to Warner's) and still score heavily.
Sachin used a 3 lb bat and scored tons of runs and no one complained. Weight puts the ball further away not the volume....